My husband and I are trying to reduce our carbon footprint where we can. We do try to shop locally, and we're trying to be more aware of where items we purchase originate. We recycle and try to to purchase items without excessive packaging. Because we can't afford solar panels yet, we do try to have a few hours each day wherein we leave the lights, the computers, and the tv's off. While we weren't able to go completely organic with our garden this year, we are composting.
Msorensson is right about picking up garbage that washes up on the beach--great point!